The contrifuges, by means of centrifugalsedimentation, treat the suspension with continuous feed, separation and discharge under a full-speed rotation. The machines are used in solid-liquid separation, particles size classification, liquid phase clearification and sewage dewatering, featuring continued of eration, large throughtput, less energy consumption, compact design, easy main tenance, etc, especially adaptable to the suspension with difficuit regeneration of cloth, a wide range of concentration and particle size.